Softbox Size Calculator
Find the perfect softbox size for your subject and lighting style.
Lighting Requirements
Recommended Softbox
30cm
Ideal: 30cm x 20cm
Size Range
Minimum Size30cm
Maximum Size45cm
Apparent Angle11.4deg
Common Softbox Sizes
60x60cmHeadshots, Products
80x80cmHalf Body Portraits
120x80cm3/4 Length Portraits
150x100cmFull Body
200x150cmGroups, Fashion
Shape Guide
Rectangular: Natural, versatile
Square: Even wraparound light
Octagonal: Round catchlights
Parabolic: Deep, focused light
Tips
- Bigger is usually better for portraits
- Move closer for softer light, not larger modifier
- Strip boxes create dramatic rim lighting
- Add grid for more directional control
- Inner diffusion increases softness
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Editorial Note
MyCalcBuddy Editorial Team
This page is maintained as an educational calculator reference.
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Formula Source: Standard Mathematical References
by Various
🔄Last reviewed: May 2026
✓Formula checks are based on standard references and internal QA review.